import React, {memo} from 'react'
import {StyleSheet, TouchableWithoutFeedback, View} from 'react-native'
import {AppBskyActorDefs, ModerationDecision} from '@atproto/api'
import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useNavigation} from '@react-navigation/native'

import {Shadow} from '#/state/cache/types'
import {ProfileImageLightbox, useLightboxControls} from '#/state/lightbox'
import {useSession} from '#/state/session'
import {BACK_HITSLOP} from 'lib/constants'
import {useWebMediaQueries} from 'lib/hooks/useWebMediaQueries'
import {NavigationProp} from 'lib/routes/types'
import {isIOS} from 'platform/detection'
import {LoadingPlaceholder} from 'view/com/util/LoadingPlaceholder'
import {UserAvatar} from 'view/com/util/UserAvatar'
import {UserBanner} from 'view/com/util/UserBanner'
import {atoms as a, useTheme} from '#/alf'
import {LabelsOnMe} from '#/components/moderation/LabelsOnMe'
import {ProfileHeaderAlerts} from '#/components/moderation/ProfileHeaderAlerts'

interface Props {
  profile: Shadow<AppBskyActorDefs.ProfileViewDetailed>
  moderation: ModerationDecision
  hideBackButton?: boolean
  isPlaceholderProfile?: boolean
}

let ProfileHeaderShell = ({
  children,
  profile,
  moderation,
  hideBackButton = false,
  isPlaceholderProfile,
}: React.PropsWithChildren<Props>): React.ReactNode => {
  const t = useTheme()
  const {currentAccount} = useSession()
  const {_} = useLingui()
  const {openLightbox} = useLightboxControls()
  const navigation = useNavigation<NavigationProp>()
  const {isDesktop} = useWebMediaQueries()

  const onPressBack = React.useCallback(() => {
    if (navigation.canGoBack()) {
      navigation.goBack()
    } else {
      navigation.navigate('Home')
    }
  }, [navigation])

  const onPressAvi = React.useCallback(() => {
    const modui = moderation.ui('avatar')
    if (profile.avatar && !(modui.blur && modui.noOverride)) {
      openLightbox(new ProfileImageLightbox(profile))
    }
  }, [openLightbox, profile, moderation])

  const isMe = React.useMemo(
    () => currentAccount?.did === profile.did,
    [currentAccount, profile],
  )

  return (
    <View style={t.atoms.bg} pointerEvents={isIOS ? 'auto' : 'box-none'}>
      <View pointerEvents={isIOS ? 'auto' : 'none'}>
        {isPlaceholderProfile ? (
          <LoadingPlaceholder
            width="100%"
            height={150}
            style={{borderRadius: 0}}
          />
        ) : (
          <UserBanner
            type={profile.associated?.labeler ? 'labeler' : 'default'}
            banner={profile.banner}
            moderation={moderation.ui('banner')}
          />
        )}
      </View>

      {children}

      {!isPlaceholderProfile && (
        <View
          style={[a.px_lg, a.py_xs]}
          pointerEvents={isIOS ? 'auto' : 'box-none'}>
          {isMe ? (
            <LabelsOnMe type="account" labels={profile.labels} />
          ) : (
            <ProfileHeaderAlerts moderation={moderation} />
          )}
        </View>
      )}

      {!isDesktop && !hideBackButton && (
        <TouchableWithoutFeedback
          testID="profileHeaderBackBtn"
          onPress={onPressBack}
          hitSlop={BACK_HITSLOP}
          accessibilityRole="button"
          accessibilityLabel={_(msg`Back`)}
          accessibilityHint="">
          <View style={styles.backBtnWrapper}>
            <FontAwesomeIcon size={18} icon="angle-left" color="white" />
          </View>
        </TouchableWithoutFeedback>
      )}
      <TouchableWithoutFeedback
        testID="profileHeaderAviButton"
        onPress={onPressAvi}
        accessibilityRole="image"
        accessibilityLabel={_(msg`View ${profile.handle}'s avatar`)}
        accessibilityHint="">
        <View
          style={[
            t.atoms.bg,
            {borderColor: t.atoms.bg.backgroundColor},
            styles.avi,
            profile.associated?.labeler && styles.aviLabeler,
          ]}>
          <UserAvatar
            type={profile.associated?.labeler ? 'labeler' : 'user'}
            size={90}
            avatar={profile.avatar}
            moderation={moderation.ui('avatar')}
          />
        </View>
      </TouchableWithoutFeedback>
    </View>
  )
}
ProfileHeaderShell = memo(ProfileHeaderShell)
export {ProfileHeaderShell}

const styles = StyleSheet.create({
  backBtnWrapper: {
    position: 'absolute',
    top: 10,
    left: 10,
    width: 30,
    height: 30,
    overflow: 'hidden',
    borderRadius: 15,
    // @ts-ignore web only
    cursor: 'pointer',
  },
  backBtn: {
    width: 30,
    height: 30,
    borderRadius: 15,
    alignItems: 'center',
    justifyContent: 'center',
  },
  avi: {
    position: 'absolute',
    top: 110,
    left: 10,
    width: 94,
    height: 94,
    borderRadius: 47,
    borderWidth: 2,
  },
  aviLabeler: {
    borderRadius: 10,
  },
})